DERIVATIVES AND HEDGING ACTIVITIES Impact of Derivative Instruments in Consolidated Balance Sheet Other (Details) - USD ($) $ in Millions	Sep. 30, 2020		Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Derivative Assets	$ 2	[1]	$ 68	[2]
Derivative Liabilities	16	[3]	7	[4]
Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative Assets			14
Deferred charges and other assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets			54
Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	14
Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	2
Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Derivative Assets	2		68
Derivative Liabilities	16		4
Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Derivative Assets	0		0
Derivative Liabilities	$ 0		$ 3

[1] Included in Other current assets in the accompanying consolidated balance sheet.

[2] Includes $14 million recorded in Other current assets and $54 million recorded in Deferred charges and other assets in the accompanying consolidated balance sheet.

[3] Includes $14 million recorded in Other current liabilities and $2 million recorded in Other liabilities in the accompanying consolidated balance sheet.

[4] Included in Other current liabilities in the accompanying consolidated balance sheet.